Woodworking-machine.



Patnted Nov. I8, |902. R. W. MGDANIEL.

WOOUWOBKING MACHINE.

(Application med mr. 10, 1902.)

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mz norms Psv UNITED STATES PATENT OFFICE.

ROBERT W. MCDANIEL, OF BALTIMORE, MARYLAND.

WOODWORKlNG-MACHINE.

SPEGIFICATION forming part of Letters Patent No. 713,908, dated November 18, 1902.

Application filed March 10, 1902. Serial No. 97,484. (No model.)

To @ZZ whom, it may concern,.-

Be it known that I, ROBERT W. MCDANIEL, a citizen of the United States, residing at Baltimore, State of Maryland, have invented certain new and useful Improvements in a Rotary Woodworking-Machine, of which the following is a specification.

This invention relates to an improvement in the construction of machines for cutting out circular disks, such as heads for barrels and kegs and similar work.

The invention consists of the improved construction of parts, as will be hereinafter pointed out.

In the drawings, Figure 1 illustrates in part a side elevation and partly a sectional view of the machine, and Fig. 2 is a horizontal section on the line 2 2 of Fig. l and illustrates a plan View of the rotary cutter-head.

In the drawings, A designates a vertical standard which may be secured to a base or, if preferred, may be secured between the floor and ceiling. This standard supports a horizontal bracket B, which latterl is secured thereto by bolts b. The bracket B is provided at each end with a bearing c and c, which support a horizontal shaft D, provided at one end with a fast and loose pulley e and e', and at the opposite end said shaft carries a bevel-gear f, which revolves in a vertical plane. The bracket B is also provided with an arm g, which projects horizontally beneath the bevel-gear f, and said arm has a bearing h', which supports a bevel-gear h, that revolves in a horizontal plane and meshes with the other gear f. The horizontally-revoluble gear his provided on its lower end with a laterally-projecting ange h2, which takes under the lower surface of the bearing h and prevents vertical displacement of the gear. The gear h is also provided with a vertical feather h3, the object of which will be hereinafter described. An arm t' extends in a horizontal direction from the bracket B and projects over and beyond the gear f.

A hollow shaft I extends vertically through the horizontal arm il and also through the horizontally-revoluble gear It, and said hollow shaft is provided with a groove j, which eX- tends in a vertical direction and into the gear h. The feather h3 of the gear has position in the groove j on the shaft. This feather h3 connects the gear h and shaft I with respect to all rotary motion, but permits said shaft to have a free vertical movement through said gear. The lower end of said shaft I Carries a circular cutter-head L, which latter revolves with the shaft, and the upper end of said hollow shaft is provided with a head l, having a surrounding groove l. The arm t' is provided with a lug m, to which latter one end of an upright link m is pivoted, and the other end of said link is pivoted at fm2 to a lever n. Thus the lever n is supported above the arm t' and has a slight lateral movement because of the upright link between it and the arm.

The lever n is provided with a circular opening o, which takes around the upper end of the hollow shaft I. A swiveled block o', having a central opening, is secured or swiveled by two pins o2 in said opening. The pins pass through the lever n, one at each side, and each of said pins enters the block at opposite sides, so as to pivot or swivel the block within the slot o. The lower part of the block on the interior of the central opening is provided with a groove p, which receives the grooved head Z of the shaft I, and an inturned flange p', which takes in the surrounding groove l. A platep2serves to retain the head l of the shaft I in the swiveled block o'. By the foregoing description it will be seen that the hollow shaft and cutter-head L are suspended from the swiveled block o, and as the shaft is revolved the head l will turn loosely in said block. The outer end of the lever n is provided with a handle n, and the opposite end of said lever carries a counterbalanceweight n2, which keeps the handle end of the lever, the hollow shaft I, and the cutter-head normally elevated.

Pivoted to the standard or beam A above the lever n is a lever q, which projects in a horizontal direction, and the free end of said lever has position directly above the hollow shaft I, and this free end of said lever is provided with an elongated slot q. A slotted head q2 receives the free end of the lever q, and a pin passing through said head and also through the slot q in said lever serves to pivotally connect said head and lever. A vertical rod r has its upper end secured in the head q2, and said rod depends from the head and passes down loosely through the hollow shaft I, and the lower end of said rod carries a presser-head fr to hold down the material. By reference to the drawings it will be seen that the rod rand presser-head r have avertical movement independent of the hollow shaft and cutter-head.

A vertical rod s is provided with slotted heads s', similar to the head q2. One head is pivotally connected to the upper lever q and the lower head s to a lever s2, which has position beneath the shaft D, and one end of said lever is pivoted beneath the bearing c. A lower vertical rod t connects the lever s2 with a treadle Z2. It will be seen that the ends of rods s and are threaded in order that both may have a vertical adjustment.

The cutter-head L in the present instance is circular' in form and is provided with radiating slots Z2, surrounded by flanges Z3. Suitable cutters u have position within the slots Z2, and a clamp device u extends crosswise of the slot and rests on said flanges and serves to retain the cutters in any set position within the slots. It will thus be seen that the cutters may be adjusted to cut larger or smaller wood disks. The cutter-head is also provided with a recess Z4 in its bottom, which receives the presser-head r.

A bracket-table c is secured to the standard beneath the cutter-head and serves to hold the material out of which the disks are to be cut.

In operation the material w, such as wood, out of which the disks are to be cutis placed on the table U beneath the cutterhead L. The treadle Z2 is now depressed, which causes the rods t, s, and r to be pulled down, and the presser-head r will press on top of the material w and hold it firmly on the table against rotation and displacement when the cutters are brought into contact with it. The lever n is now pulled downward, carrying the swiveled block o, hollow shaft I, and revolving cutter-head L with it. This downward movement of the cutter-head causes the cutters to contact with the upper surface of the board or other material wand cut same as the head and cutters are revolved. The hollow shaft I is continuously revolved by means of the gears h andfand the shaft D. When the wood disk has been cut,the levern is released, and the same is raised by means of the weight n. The raising of the lever n carries the hollow shaft and cutter-head with it. The treadle is now released, and the rod r and presser-head r are raised by means of the weight which is suspended from a cord or belt which passes over the pulley and is attached to the lever q.

The novel features of construction and combination are pointed out in the claim.

Having thus described my invention, what I claim is- The combination of a standard; a bracket supported by the standard and having a bearing, h', at one end; a bevel-gear, h, supported in said bearing and revoluble in a horizontal plane; a driving-shaft also supported by said bracket and carrying a gear which revolves in a vertical plane and meshes with said horizontal revoluble gear; a vertical hollow shaft having at its upper end a circumferential groove, said shaft extending through said bevel-gear and connected therewith by a groove and feather; a revoluble cutter-head on the lower end of said hollow shaft; a horizontal pivoted lever above said driving-shaft, said lever carrying at one end a weight and near the opposite end having a circular opening; a block pivoted at each side in said central opening and hanging pendent therefrom, said block also having a central opening the interior of which latter is provided with a groove, and an inturned flange which receives the grooved end of the vertical hollow shaft; a rod passing through the opening in said pivoted block and extending entirely through said hollow shaft and carrying a presser-head on its lower end; a weight for keeping the rod and presser-head normally elevated and lever mechanism for lowering said rod and presser-head.

In testimony whereof I affix my signature in the presence of two witnesses.

ROBERT W. MCDANIEL.

Witnesses:

RoBT. C. RHODES, CHARLES L. VIETscH. 

